UFC's 'Cyborg' Justino: I Want to Box On Floyd vs. Conor Undercard

Cris 'Cyborg' Justino is already throwing her hat in the ring to be a part of the possible Mayweather vs. McGregor superfight ... and says she's down to BOX if that's what'll seal the deal.

After we broke the story that Mayweather has a $50 million offer out to Conor -- Cyborg tweeted out to Floyd saying:

"Hey @FloydMayweather if [McGregor] Fights you In Boxing I want a Boxing Fight on The event2. #mma vs #boxing u pick The girl! #tmt."

Cyborg also says she's already got a boxing coach who "will have me ready."

As we reported, nothing is in stone (or even close) but it seems like there's a real chance.